Android 系统ContentProvider 管理联系人，查询，增加 Name,Phone,E-mail。

读写CONTACT需要的权限：

    <uses-permission android:name="android.permission.READ_CONTACTS"/>    <uses-permission android:name="android.permission.WRITE_CONTACTS"/>

activity_content_provider_test.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="shortcut.song.com.myapplication.ContentProviderTest">    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Search"        android:onClick="search"/>    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Add"        android:onClick="add"/>    <EditText        android:id="@+id/contact_name"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:hint="name"/>    <EditText        android:id="@+id/contact_phone"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:hint="phone"/>    <EditText        android:id="@+id/contact_email"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:hint="email"/></LinearLayout>

result.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">    <ExpandableListView        android:id="@+id/contact_list"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/></LinearLayout>

ContentProviderTest.java

package shortcut.song.com.myapplication;import android.content.ContentResolver;import android.content.ContentUris;import android.content.ContentValues;import android.database.Cursor;import android.database.DataSetObserver;import android.net.Uri;import android.provider.ContactsContract;import android.support.v7.app.AlertDialog;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.Gravity;import android.view.View;import android.view.ViewGroup;import android.widget.AbsListView;import android.widget.EditText;import android.widget.ExpandableListAdapter;import android.widget.ExpandableListView;import android.widget.TextView;import android.widget.Toast;import java.util.ArrayList;import java.util.List;public class ContentProviderTest extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_content_provider_test);    }    public void search(View v) {        //定义两个List来封系统的统的联系人信息，指定联系人的电话，Email        final ArrayList<String> names = new ArrayList<>();        final ArrayList<ArrayList<String>> details = new ArrayList<ArrayList<String>>();        // 使用ContentResolver查找联系人信息        ContentResolver contentResolver = getContentResolver();        Cursor cursor = contentResolver.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);        // 遍历查询结果，获取系统中所有联系人        while (cursor.moveToNext()) {            // 获取联系人ID            String contactId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));            //获取联系人名字            String name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));            names.add(name);            // 使用ContentResolver查并联系人电话            Cursor phone = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null                                    ,ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + contactId , null, null);            ArrayList<String> detail = new ArrayList<>();            // 遍历查询结果，获取该联系人的多个电话号码            while (phone.moveToNext()) {                // 获取查询结果中电话号码列中的数据                String phoneNumber = phone.getString(phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));                detail.add("PHOME:" + phoneNumber);            }            phone.close();            // 使用ContentResolver查找联系人Email            Cursor emails = getContentResolver().query(                    ContactsContract.CommonDataKinds.Email.CONTENT_URI                    ,null, ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = " + contactId                    ,null, null);            // 遍历查询结果，获取该联系人的Email            while(emails.moveToNext()) {                String emailAddress = emails.getString(emails.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));                detail.add("Email:"+ emailAddress);            }            emails.close();            details.add(detail);        }        cursor.close();        // 加载result.xml 布局        View resultLayout = getLayoutInflater().inflate(R.layout.result, null);        // 获取resultLayout 中ID 为 contact_list 的ExpandableListView        ExpandableListView list = (ExpandableListView)resultLayout.findViewById(R.id.contact_list);        //创建一个ExpandableListAdapter对象        ExpandableListAdapter adapter = new ExpandableListAdapter() {            @Override            public void registerDataSetObserver(DataSetObserver observer) {            }            @Override            public void unregisterDataSetObserver(DataSetObserver observer) {            }            @Override            public int getGroupCount() {                return names.size();            }            @Override            public int getChildrenCount(int groupPosition) {                return details.get(groupPosition).size();            }            @Override            public Object getGroup(int groupPosition) {                return names.get(groupPosition);            }            // 获取指定位置，指定子列表处的子列表数据            @Override            public Object getChild(int groupPosition, int childPosition) {                return details.get(groupPosition).get(childPosition);            }            @Override            public long getGroupId(int groupPosition) {                return groupPosition;            }            @Override            public long getChildId(int groupPosition, int childPosition) {                return childPosition;            }            @Override            public boolean hasStableIds() {                return true;            }            private TextView getTextView() {                AbsListView.LayoutParams lp = new AbsListView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 64);                TextView textView = new TextView(ContentProviderTest.this);                textView.setLayoutParams(lp);                textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);                textView.setPadding(36, 0, 0, 0);                textView.setTextSize(20);                return textView;            }            // 该方法决定每个组选项的外观            @Override            public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {               TextView textView = getTextView();                textView.setText(getGroup(groupPosition).toString());                return textView;            }            // 该方法决定每个子项的外观            @Override            public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {                TextView textView = getTextView();                textView.setText(getChild(groupPosition, childPosition).toString());                return textView;            }            @Override            public boolean isChildSelectable(int groupPosition, int childPosition) {                return true;            }            @Override            public boolean areAllItemsEnabled() {                return false;            }            @Override            public boolean isEmpty() {                return false;            }            @Override            public void onGroupExpanded(int groupPosition) {            }            @Override            public void onGroupCollapsed(int groupPosition) {            }            @Override            public long getCombinedChildId(long groupId, long childId) {                return 0;            }            @Override            public long getCombinedGroupId(long groupId) {                return 0;            }        };        list.setAdapter(adapter);        new AlertDialog.Builder(ContentProviderTest.this).setView(resultLayout).setPositiveButton("OK", null).show();    }    public void add(View v) {        //获取用户输入        String name = ((EditText)findViewById(R.id.contact_name)).getText().toString();        String phone = ((EditText)findViewById(R.id.contact_phone)).getText().toString();        String email = ((EditText)findViewById(R.id.contact_email)).getText().toString();        //创建ContentValues对象        ContentValues values = new ContentValues();        // 向RawContacts.CONTENT_URI,执行插入一个空值        // 目地是获取系统返回的rawContentId        Uri rawContentUri = getContentResolver().insert(ContactsContract.RawContacts.CONTENT_URI, values);        long rawContentId = ContentUris.parseId(rawContentUri);        values.clear();        values.put(ContactsContract.Data.RAW_CONTACT_ID, rawContentId);        // 设置内容类型        values.put(ContactsContract.Data.MIMETYPE, ContactsContract.CommonDataKinds.StructuredName.CONTENT_ITEM_TYPE);        // 设置联系人名字        values.put(ContactsContract.CommonDataKinds.StructuredName.GIVEN_NAME, name);        // 向联系人URI添加联系人名字        getContentResolver().insert(ContactsContract.Data.CONTENT_URI, values);        values.clear();        values.put(ContactsContract.Data.RAW_CONTACT_ID, rawContentId);        values.put(ContactsContract.Data.MIMETYPE, ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE);        // 设置联系人的电话号码。        values.put(ContactsContract.CommonDataKinds.Phone.NUMBER, phone);        // 设置电话类型        values.put(ContactsContract.CommonDataKinds.Phone.TYPE, ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE);        // 向联系人电话号码URI添加电话号码        getContentResolver().insert(ContactsContract.Data.CONTENT_URI, values);        values.clear();        values.put(ContactsContract.Data.RAW_CONTACT_ID, rawContentId);        values.put(ContactsContract.Data.MIMETYPE, ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE);        // 设置联系人的E-mail地址        values.put(ContactsContract.CommonDataKinds.Email.DATA, email);        // 设置联系人的电子邮件类型        values.put(ContactsContract.CommonDataKinds.Email.TYPE, ContactsContract.CommonDataKinds.Email.TYPE_WORK);        // 向联系人E-mail URI 添加Email数据        getContentResolver().insert(ContactsContract.Data.CONTENT_URI, values);        Toast.makeText(ContentProviderTest.this, "Contact add is ok", Toast.LENGTH_SHORT).show();    }}

运行效果：